Reid Kleckner db9a91e324 Revert "Don't create unnecessary PHIs"
This reverts commit r255489.

It causes test failures in Chromium and does not appear to respect the
AlternativeV parameter.

llvm-svn: 255562
2015-12-14 22:36:57 +00:00
..
2015-12-14 18:34:23 +00:00